Calibrating Your Speed Sensor

Before you can calibrate your speed sensor, you must pair your watch with a compatible speed sensor ().

Manual calibration is optional and can improve accuracy.

  1. Hold .
  2. Select Settings > Accessories > Speed/Cadence > Wheel Size.
  3. Select an option:
    • Select Auto to automatically calculate your wheel size and calibrate your speed sensor.
    • Select Manual, and enter your wheel size to manually calibrate your speed sensor ().